Reference
Gustav Peters, Tanja Haus, Rainer Hutterer (2014): Neotropical primates from the Cologne Zoo in the collections of the
Zoologisches Forschiingsmuseum Alexander Koenig: noteworthy specimens, taxonomic notes and general considerations – Bonn zoological Bulletin - früher Bonner Zoologische Beiträge. – 63: 173 - 187.